Statistics Canada says the country posted a merchandise trade deficit of $2.3 billion in March.
The agency says it was the largest trade deficit since June 2023 and followed a surplus of $476 million in February.
Total exports fell 5.3 percent in March to $62.6 billion as exports of unwrought gold, which surged in February, came back down.
Exports of metal and non-metallic mineral products decreased 17.4 percent in March.
Meanwhile, imports fell 1.2 percent to $64.8 billion as imports of electronic and electrical equipment and parts fell 8.1 percent.
In volume terms, total exports fell 4.7 percent, while total imports decreased 1.2 percent.